string plural(string str)
{
    return str + "s";
}

{
    string tmp;
    tmp = plural("ant");
}

string concate(string a, string b)
{
    string c = a + " and " + b;
    return c;
}

{
    string tmp = concate("ant", "rat");
}

string plural_then_concate(string a, string b)
{
    string pa;
    string pb;
    pa = plural(a);
    pb = plural(b);
    return concate(pa, pb);
}

string msg = "smallka's " + plural_then_concate("ant", "rat");

printf(msg);

